Method for measuring position in M2M system and apparatus therefor

Abstract

The present invention relates to a method for enabling a machine-to-machine (M2M) gateway to measure the position of an M2M device, and an apparatus therefore, and the method includes the steps of: receiving a request for generating a first resource representing the way of obtaining positional information form a first M2M device; if the generation request contains the information for indicating commonly based positional measurement, determining the device closest to the first M2M device; and setting the positional information of the closest device as the positional information for the first m2M device, wherein if the M2M gateway does not have network topological information, or at least one M2M device connected to the m2M gateway does not have positional information, the M2M topological information, and the at least one M2M device connected to the M2M gateway has positional information, the device having the minimum number of hops from the first M2M device among the at least one M2M device is determined as the closest device, and the first resource represents a data structure capable of being uniquely addressed using address information.

The invention claimed is: 
     
       1. A method for obtaining location information of a machine-to-machine (M2M) device by a M2M gateway, the method comprising:
 receiving a create request from a first M2M device, the create request for creating a first resource indicating a scheme of obtaining location information; 
 searching for a device closest to the first M2M device based on network topology information, when the create request includes information indicating sharing-based location measurement; 
 when the device closest to the first M2M device is found, storing location information of the closest device as location information of the first M2M device; and 
 when the device closest to the first M2M device is not found, storing location information of the M2M gateway as the location information of the first M2M device. 
 
     
     
       2. The method according to  claim 1 , wherein the searching for the device closest to the first M2M device includes:
 searching for the closest device using a minimum number of hops based on the network topology information. 
 
     
     
       3. The method according to  claim 1 , wherein the storing the location information of the closest device includes:
 storing the location information of the closest device in a second resource for storing the location information of the first M2M device. 
 
     
     
       4. The method according to  claim 1 , wherein the storing the location information of the M2M gateway includes:
 storing the location information of the M2M gateway in a second resource for storing the location information of the first M2M device. 
 
     
     
       5. The method according to  claim 1 , wherein the network topology information is constructed based on a list of M2M devices connected to the M2M gateway. 
     
     
       6. The method according to  claim 1 , wherein the sharing-based location measurement is applied when the first M2M device does not have a positioning determination capability and a network-based positioning capability. 
     
     
       7. The method according to  claim 1 , wherein the sharing-based location measurement represents obtaining the location information of the first M2M device from the M2M gateway. 
     
     
       8. The method according to  claim 1 , wherein the first resource corresponds to a data structure that is uniquely addressable using address information. 
     
     
       9. The method according to  claim 1 , wherein if there are at least two devices having a minimum number of hops, a device having a latest location information is determined as the device located closest to the first M2M device. 
     
     
       10. A machine-to-machine (M2M) gateway configured to obtain location information of a M2M device, the M2M gateway comprising:
 a network interface unit; and 
 a processor configured to: 
 receive a create request from a first M2M device, the create request for creating a first resource indicating a scheme of obtaining location information, 
 search for a device closest to the first M2M device based on network topology information when the create request includes information indicating sharing based location measurement, 
 when the device closest to the first M2M device is found, store location information of the closest device as location information of the first M2M device, and 
 when the device closest to the first M2M device is not found, store location information of the M2M gateway as the location information of the first M2M device. 
 
     
     
       11. The M10M gateway according to  claim 10 , wherein the searching for the device closest to the first M2M device includes:
 searching for the closest device using a minimum number of hops based on the network topology information. 
 
     
     
       12. The M10M gateway according to  claim 10 , wherein the storing the location information of the closest device includes:
 storing the location information of the closest device in a second resource for storing the location information of the first M2M device. 
 
     
     
       13. The M2M gateway according to  claim 10 , wherein the storing the location information of the M2M gateway includes:
 storing the location information of the M2M gateway in a second resource for storing the location information of the first M2M device. 
 
     
     
       14. The M2M gateway according to  claim 10 , wherein the network topology information is constructed based on a list of M2M devices connected to the M2M gateway. 
     
     
       15. The M2M gateway according to  claim 10 , wherein the sharing-based location measurement is applied when the first M2M device does not have a positioning determination capability and a network-based positioning capability. 
     
     
       16. The M2M gateway according to  claim 10 , wherein the sharing-based location measurement represents obtaining the location information of the first M2M device from the M2M gateway. 
     
     
       17. The M2M gateway according to  claim 10 , wherein the first resource corresponds to a data structure that is uniquely addressable using address information. 
     
     
       18. The M2M gateway according to  claim 10 , wherein if there are at least two devices having a minimum number of hops, a device having a latest location information is determined as the device located closest to the first M2M device.